Adam P Warren, MD

7 locations · Sutter Bay Medical Foundation · Orion Orthopaedic Trauma Inc

Hospitals listed: Alta Bates Summit Medical Center · Alta Bates Summit Medical Center - Alta Bates Camp · Eden Medical Center · Memorial Medical Center · Sutter Delta Medical Center. That is not proof they admit you there this week.

Licence A103633 · Current

Licensed to practise in California · since 2008 · expires 2028-04-30 · Stanford University School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

5 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

• Alta Bates Summit Medical CenterOakland, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 78% would definitely recommend it
  Overall rating: 5 of 5 starsBetter than the national rate — Death rate among surgical inpatients with serious treatable complications: 130.09 (87.72 to 172.46) · 109 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.274, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.227, Oct 2024 – Sep 2025
• Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 2 of 5 · 67% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.298, Oct 2024 – Sep 2025
• Eden Medical CenterCastro Valley, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 75% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.122, Oct 2024 – Sep 2025
• Memorial Medical CenterModesto, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 72% would definitely recommend it
  Overall rating: 3 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.093, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.085, Oct 2024 – Sep 2025
• Sutter Delta Medical CenterAntioch, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 2 of 5 · 60% would definitely recommend it
  Overall rating: 3 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.173, Oct 2024 – Sep 2025

$139,531

Medicare paid this office $139,531 for 148 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Procedures Medicare counted

Who their Medicare patients are

148 Original Medicare patients in 2024. Average age 77 · Women 62% · Also on Medicaid 37% · Health risk score 1.56. Above the middle of the specialty; the typical orthopedic surgery clinician is at 1.13.

Conditions among them: High blood pressure 75% · Chronic kidney disease 32% · Diabetes 28% · Depression 28% · Coronary heart disease 24% · Dementia 22% · Atrial fibrillation 21% · COPD 19% · Heart failure 18% · Cancer 13% · Stroke 11%.

The office billed $323,020, Medicare allowed $176,799 and paid $139,531; for 486 services of 60 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

$25,583 in 2022

Medicaid paid $25,583 for 164 billed services this clinician did in 2022, up to 16 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

$718

Pharmacies billed $718 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

Opioids were 94% of their Part D prescriptions (33 of 35) in 2024. Too few prescriptions to compare fairly with other clinicians.

34 generic and fewer than 11 brand-name prescriptions · $718 in drug cost.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Year by year

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

$301 in 2025

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

NPI

1205164761

Licence

CA A103633, PA MD446107California A103633: Current · expires 2028-04-30

Trained

Stanford University School of Medicine, 2004

Group

Sutter Bay Medical Foundation · Orion Orthopaedic Trauma Inc

Gender

Male